Retaining device.



E. W. SMITH.

RETAINING DEVICE.

APPLICAIION HLED ShPLZI, 191/.

1 276 98 1 I, Patented Aug. 27, 1.918.

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EDWIN W. SMITH, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESITE ASSIGNMENTS,-

TO UNITED SHOE MACHINERY CORPORATION, OF PATEBSON, NEW JERSEY, A. COR- PORATION OF NEW JERSEY.

RETAINING DEVICE.

Specification of Letters Patent. I Ptented A g. 27 1918 Application filed September 27, 1191?. Serial No. 193,557.

of Massachusetts, have invented certain Improvements in Retaining Devices, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several This invention relates to retaining devices and particularly to those for removably holding a member" in place upon a spindle or the like.

In manyclasses of machines, a ribbon or band of material to be operated upon is supplied to the operating mechanism from a continuous coil carried by a core or roll rotatable about a spindle and from which the material is drawn in the operation of the machine. It is, of course, necessary at intervals to supply to the apparatus a new coil, and to give the proper feed of material the ribbon is 'drawn off against a certain resistance, this ordinarily being furnished by pressing one end of the roll or coil against a yieldable friction surface by means of an adjustable abutment or retaining device at the opposite end. To enable these results to,,be attained satisfactorily,

the retaining device must be readily remov-- able from the spindle and when in place must hold the roll firmly against the pressure exerted by the friction device. To furnish a simple and easily operated retaining device possessing such characteristics is th object of the present invention.

A feature ofmy improved retaining device consists of a collar movable upon a spindle for cooperation with a member on the spindle,"such as a supply roll, this collar carrying a member provided with an opening to receive and normally engage the spindle to retain the collar in place.

Another feature of the invention concerns the manner in which the engaging member cotiperates with the spindle, so that it may be easily moved in one direction while resisting movement in the other. In the form illustrated theengaging member from the point at which it is secured is inclined with respect to the spindle.

As a further feature, the invention provides the engaging member with a portion which may be readily manipulated by the operator to disengage the retaining device for movement along the spindle away from the roll.

For 'an understanding of the invention, reference may be had to the accompanying drawing, in which- Figure 1 shows the device applied to a stamping machine, said device itself appearing in end elevation, and

Flg. 2 is a front elevation of the supply roll and retaining device.

One of a number of utilizations of my invention is in connection with the color ribbon of a stamping machine, and I have shown at 10 a portion of such an apparatus. The supply spindle 12 of the machine carries upon a roll 14 a coil of ribbon R, one extremity of which roll contacts with a friction device including a collar 16 fixed to the spindle by a screw 18, and a spiral spring 20 surrounding the spindle, with one end against the collar and the opposite end forcing a washer 22 against the end of the roll l t. The roll may be applied to or removed from the spindle over its free end 24:, it being retained thereon against the washer 22 by an abutment consisting of a collar 26 having at its outer side an enlarged head 28, which is preferably knurled to enable it to be'firmly grasped by the operator. This collar so fits the spindle as to be freely movable thereon. Adjacent to the edge of the head 28 is an opening adapted to receive a screw 30 which secures to the outer faceof the head a resilient member, here shown as a leaf spring 32. In this spring is an opening st to permit the passage of the spindle. The'securing point of the sprin to the head and the opening 34 are so re ated and the spring is so tensioned, that when the collar is upon the spindle the edge of the opening 34 toward t e securing point is forced into engagement with the spindle. At this time, by the contact of the spring and spindle, the former is held inclined to the outer face of the head, it diverging therefrom toward the free end of the spring. As a result of this, when the collar 26 is applied to the spindle and moved toward the roll 1 the tendency of the contact of the spring with the spindle is to lift it out of engagement therewith so feet.

gr, ree'aeai that the collar may be moved without much resistance toward the roll. Movement in the opposite direction, however, tends to ress the spring toward the head and therefore brings it into firmer engagement with the spindle, thus locking the collar in place holding it at any pointto which it may be adjusted against the expansive force of the spring 20. To permit the spring 32 to be readily raised out of contact withthe spindle so that the collar may be ad usted toward the free end of the spindle or removed therefrom, said spring has an end portion 36 which is carried over the edge of the head and inwardly at the side of said head adjacent to the body of the collar. By grasping the head and this spring portion 36 between the thumb and forefinger, the operator can move the spring away from the head and thus destroy its clutching ef- Having thus described my invention, what 1 claim as new and desire to secure by Letters Patent of the United States'is:

l. A device for retaining a member in place upon a spindle comprising a collar for cooperation with the member, said collar being freely movable upon the spindle, and a resilient member carried by the collar and being provided with an opening to receive the spindle, the edge of the opening being held normally in engagement with the spindle to retain the collar against movement thereon.

2. A device for retaining a member in place upon a spindle comprising a collar for cooperation with the member, said collar being movable upon the spindle, and a resilient member carried by the collar and being provided with an opening to receive the spindle, the member being so tensioned as to tend to move toward the collar to hold the edge of its opening normally in engagement with the spindle and having a portion upon the opposite side of the collar by which it may be actuated to disengage it from the spindle.

3. A device for retaining a member in place upon a spindle comprising a collar for co tiperation with the member, said col lar being movable upon the spindle, and a leaf spring secured at one end adjacent to the edge of the outer face of the collar and being provided with an opening through which the spindle projects, the spring being tensioned and positioned to hold the edge of the opening in normal engagement with the spindle. I

4. A device for. retaining a member in place upon a spindle comprising a collar for cooperation with the member, said collar being movable upon the spindle and having an enlarged head at its outer side, and a leaf spring secured at one end adjacent to the edge of the outer face of the head and being provided with an opening to receive the spindle, the spring beingtensioned and positioned to hold the edge of the opening in normal engagement with the spindle and having a portion extending over the edge of the head to the opposite side thereof to enable the spring to be grasped and moved outwardly and upwardly to disengage it from the spindle.

5. A device for retaining a member in place upon a spindle comprising a collar for coiiperation with the member, said collar being freely movable upon the spindle, and a resilient member carried by the collar and being provided with an opening to receive the spindle, the edge of the opening being held normally in engagement with the spindle and with the resilient member inclined with respect to said spindle.

6. A. device for retaining a member in place upon a spindle, comprising a collar for cooperation with the member, said collar being movable upon the spindle, and a leaf spring secured at one end adjacent to the edge of the outer face of the collar and being provided with an opening through which the spindle projects, the spring being tensioned and positioned to hold the edge of the opening in normal engagement with the spindle with the spring inclined outwardly from the point at which it is secured.

in testimony whereof I have signed my name to this specification.

EDW 1N W. SMITH. 

